US4013566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible desiccant body
Assignee: Adsorbex Inc
•
Filing: 1975-04-07
•
Granted: 1977-03-22
•
Expires: 1995-04-07
Abstract
Abstract A flexible solid desiccant body is disclosed comprising finely divided particles of desiccant material, such as molecular sieve, homogeneously distributed and bound in a moisture transmissive aliphatic epoxy polymer matrix. The desiccant bodies are especially adapted for use as drier materials in refrigerant fluid systems. The flexible bodies are shaped in various sheet, tubular, rod and other forms and can be placed at various locations in refrigerant fluid systems.
Inventors
- 👤 R. Daniel Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:06
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/28; B01J20/28014; B01J20/28026; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/183; B01J20/28033; B01J20/28042; F; F25; F25B; F25B43/00; F25B43/003
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
30 words
A flexible solid desiccant body comprising finely divided particles of desiccant material homogeneously distributed and encapsulated in a moisture transmissive polymer solid matrix of a cured thermoset aliphatic epoxy resin.
Claim 2
Dependent Claim
30 words
A flexible solid desiccant body comprising finely divided particles of desiccant material homogeneously distributed and encapsulated in a moisture transmissive polymer solid matrix of a cured thermoset aliphatic epoxy resin.
Claim 3
Dependent Claim
12 words
The desiccant body of claim 1 wherein said matrix is moisture sorbtive.
Claim 4
Dependent Claim
18 words
The desiccant body of claim 1 wherein said resin is a copolymeric resin of a lower alkylene oxide.
Claim 5
Dependent Claim
14 words
The desiccant body of claim 1 wherein said polymer matrix includes a flexibilizing modifier.
Claim 6
Dependent Claim
17 words
The desiccant body of claim 3 wherein said resin is a copolymer of epichlorohydrin and ethylene oxide.
Claim 7
Dependent Claim
20 words
The desiccant body of claim 5 wherein said polymer contains about 70% epichlorohydrin and about 30% by weight ethylene oxide.
Claim 8
Dependent Claim
14 words
The desiccant body of claim 1 wherein said desiccant is a molecular sieve material.
Claim 9
Dependent Claim
14 words
The desiccant body of claim 7 wherein said sieve material is a synthetic zeolite.
Claim 10
Dependent Claim
56 words
The desiccant body of claim 1 wherein the desiccant is contained in an amount of about 10 to about 90% by weight based upon total desiccant-polymer matrix weight with the proviso that as the desiccant increases toward about 90% by weight then a flexibilizing modifier in an effective flexibilizing amount is included in said cured matrix.
Claim 11
Dependent Claim
37 words
A flexible solid desiccant body for drying refrigerant fluids comprising finely divided particles of molecular sieve material homogeneously distributed and encapsulated in a moisture transmissive and sorptive polymer solid matrix of a cured thermoset aliphatic epoxy resin.
Claim 12
Dependent Claim
37 words
A flexible solid desiccant body for drying refrigerant fluids comprising finely divided particles of molecular sieve material homogeneously distributed and encapsulated in a moisture transmissive and sorptive polymer solid matrix of a cured thermoset aliphatic epoxy resin.
Claim 13
Dependent Claim
17 words
The desiccant body of claim 10 wherein said resin is a copolymeric resin of lower alkylene oxide.
Claim 14
Dependent Claim
17 words
The desiccant body of claim 10 wherein said resin is a copolymer of epichlorohydrin and ethylene oxide.
Claim 15
Dependent Claim
12 words
The desiccant body of claim 12 further containing an external flexibilizing modifier.
Claim 16
Dependent Claim
11 words
The desiccant body of claim 13 wherein said modifier is dioctylphthalate.
Claim 17
Dependent Claim
34 words
The desiccant body of claim 11 wherein the molecular sieve material is contained in an amount of from about 40% by weight to about 80% by weight of total molecular sieve material-polymer matrix weight.
Claim 18
Dependent Claim
14 words
The desiccant body of claim 15 wherein said molecular sieve comprises a synthetic zeolite.
Claim 19
Dependent Claim
10 words
The desiccant body of claim 10 shaped in tubular form.
Claim 20
Dependent Claim
10 words
The desiccant body of claim 10 shaped in sheet form.
Claim 21
Dependent Claim
13 words
The desiccant body of claim 10 shaped in tubular form having exposed vanes.
Claim 22
Dependent Claim
17 words
The desiccant body of claim 19 having internal radially extending vanes and a core interconnecting said vanes.
Claim 23
Dependent Claim
10 words
The desiccant body of claim 10 having an opencelled structure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |